Arguments from both sides about emissions program

"cap-and-trade" system on Wednesday by holding its first auction for pollution permits — a process that will put a price on carbon emissions.

The program works by placing a limit, or cap, on emissions from individual polluters such as power plants, refineries and food processors.

Businesses are required to cut emissions to cap levels, or buy allowances from other companies for each ton over the cap that is discharged annually.

Here are arguments from both sides about cap and trade:

—Refineries and electric companies argue the increased cost of doing business in the state will lead to "leakage," meaning out-of-state competitors will increase production as they pursue more customers and market share.

—Manufacturers worry that California-made products will become more expensive to produce, leading to higher prices for consumers.